Machine for knitting thickened-wale fabrics



June 5, 1928.

R. W. SCOTT MACHINE FOR KNITTING THICKENED WALE FABRICS Filed Aug.1o, 1916 8 sheet-sneet L June 5. 1928. 1;672,1`77

R. W. SCOTT MACHINE FOR KNITTING THIGKENED WALE 'ABRICS Filed Aug. 10, 1918 :s sneets-sheet 2 F/g 2/.

June 5, 1928. l,-672,177

R. w, sco'r'r.

MACHINE FOR KNITTING THICKNED WALE FABRICS Filed Aug. 10, 1916 5 Sheet-Sheet 3 Patented June 5, 1928.

- UNITED sTATEs PATENT OFFICE.l

ROBERT W. SCOTT, OF BOSTON', MASSACHUSETTS, ASSIGNOB, BY MENE ASSIGNMENTB, .T SCOTT 8G 'WILLIAMS INCOBPORATED, A'COBPORATION 01' MASSACHUSETTS.

MACHINE FOR KNITTING THICKENED-WALE FABBICS.

Application filed August 10, 1916. Serial '80. 114,098.

This invention relates to knitting machines, an object of the invention being to provide, in addition to the usual functions of such a machine, for knitting a longitudinal mark, wale or ridge having therein an additional or thickening yarn, and characterized b relative opacity as compared with the ody-fabric, and if desired by an intermittent or interr'upted structure imitating a sewed seam. a

Heretofore fabrics havinglongitudinal marks'or ridges, as for clocks, mock seams and similar uses, have been formed either by varying the knitting as by tucking, 'dropstitching or other. weakening changes of texture without thickening the fabric at the mark, or by adding an embroidery or sewingyarn to the'fabricafter its completion;

and one purpose of this improvement toprovide for making marks, seams or thlckened wales of this nature without Lcreating in the fabric any structure tending to weaken the fabric and 'without necessitating two Operations, the machine concurrently forming the fabric and lmaking the seam or ridge. This invention therefore provides, in a machine having the usual devices for the lpr'o'iu'ction of an article such as a stocking, means for additionally producing in the article, at predetermined parts thereof, a mock seam, ridge or mark characterized by the presence of an additional or thickening yarn.

For the above or other purposes this invention also provides means for feeding to a limited segment of the needles of a circular knittingmachine an additional yarn in such a manner as to cause said yarn to extend continuously longitudinally of the fabric, and alternately to engage the fabric formed by one or the other of said needles at and between, or' near, the wales of loops formed upon lsaid needles.

UThis invention further provides for feeding an additional yarn for a mark, ridge or mock-seam. in such a manner as not to in- 'terfere lwith splicing the fabric by the ordinary agencies employed for that purpose, for instance agencies for producing a high splice partly around the ankle, at the back 'thereof and above the heel -in a seamless stocking. 'This invention ther'efore comprises in a knitting machine of the kind having knitfabric.

ting and splicing yarn feeding devices,

'means for also feeding an additional yarn,

the respective yarn feeding means being -adapted and arranged to'cooperate together `Without lnterferen'ce for the performance of 1,282,958 dated October 22, 1918), but it will be understood that my invention is independent of the particular machine to which it is applied, being of general application to knitting machines having relatively movable yarn feed devices and needles.

In the accompanying drawings-- Figure 1 is a development of the needle cams in an illustrative circular machine, showing one embodiment of this invention;

Figure 2 is a side elevation of a circular knltting machine illustrating one form of automatic devices for feeding .the thickening yarn and other yarns;

Flgure 3 is a partial plan view above the' latch ring, parts being in section on the line 3-3 of Figure 2;

Figure 4 is a plan' above the cam ring of.

the knitting machine' shown in Fig. 2, showing some of the needles, and one device for rendering the production of the thickened place intermittent;

Figures 5 and 6 are respectively a detail under plan 'o f an instrument dial and a section on the line 6-6 of 'said instrument dial illustrating provisions for floating the additional yarn across the needle'circle;

Figure 7 is a Vertical' section on the line 7-7 of Fig. 4; i w

Figure 8 is a view illustrating the different kinds of needles employed; V

Figures 9, 10, 11, 12, 13 and`14` are diagrams illustrating the relations of the different yarns to each other and to the needles.

F1gure-15 is a view illuistrative of a stocking employing the new 'structure as 'amock seam at the back of the leg; and

Figure 16 is'a diagram of oneform of the Referring to Figs. 1, 2 and 4, a circular machine having therein a cylinder or carrier 260 for needles n of the usual construction may be employed. In the ordinary operation of the machine, relative movement in the direction of the arrow N between needle carrier 260 and the cam ring or carrier 271, Figs. 1 and 4, having thereon the usual knitting cams 357,360,`3,61, results in. movin the needles to knit the usual plain knit fa ric having a new course of loops formed at each passage of all of the needles past the stitch cam 360, 361. As illustrated in Figs. 1 and 16, knit-ting may so take place at each of the needles in turn atthe following stitch cam 360 from a body yarn k. The needles 'n may, as shown, be latch needles of the ordinary form, some of them, see Figs. 4 and 8, having long butts n', and some of them having shorter butts n, for the usual purpose of enabling one set. the long butt needles for instance, to be placed out of 'action and out of range of any of the cams' 357, 360 and 361, during reciprocal knitting, as for heel and toe pockets, on the remainingneedles n2.

A predetermlnedsegment of the needles, as shown at na may be arranged to be oper- 'ated diferently from the remainder as by 'providing them withtbutts shorter than the,

others,l for the Purpose of applying to them a different yarn t to form a mock seam or thickened wale, one species lof which is shown at 2, Fig. 16.'

In the machine illustrated, needles which have been actuated to knit, for instance at cam 360, are returned to an intermediate level 40, at which their latches are not cleared through their previous loops, so that in order to knit said needles must be further advanced before receiving yarn and before being depressed to a lower point than the intermediate level 40 for the purpose of knitting.

The machine improved may comprise means cooperating with a movable splicing yarn guide 8' to cause some of the needles, for instance those having the shorter butts nzto take in addition to the yarnlc at the time of their knitting at cam 360 an addi tional splicing yarn 8, the devices Cooperating with the splicing yarn guide 8' being such as to cause said splicing yarn guide to remove 'its yarn above the 'passing needles except when the segment of needles to receive the splieing yarn is passing the yarn guide, the s licing yarn by this means being caused to oat across the circle of needles from one end to the other end of the seg-l` ment of needles n. This float usually defines a diameter or substantially a diameter of the circle of needles.

The yarn 7: is also fed from a movable yarn guide k' and this yarnimay be substituted for, exchanged, or accompanied by another yarn according to the arrangement of the' machine, for instance, by removing the bars 460, Fig. 2, operated by cams on a pattern drum 120 intermittently moved, for instance, throughout one whole revolution .during the making of each article. The motion of the splicing yarn guide 8' into and out of operation during each revolution ofthe cylinder 260 may be caused as usual by a cam 296 rotating with said cylinder reacting on a lug a on that bar 460 cooperating with the yarn guide 8'.

vWithout. disturbing the above-indicated old art arrangemcnts, the present invention provides for isolating a segment of the needles, for instanec the needles na having the shortest butts, from their neighboring needles, and for winding upon said needles a wra.. ping of a continuous additional yarn t, during knitting of a predetermined extent of fabric. While this yarn is continuous during production of this extent of fabric, its application to the needles na may be intermittent.

Any suitable means for isolating the needles to receive the yarn t may be provided.

iAs illustrated, at a part of the cam-ring 271 following the stitch-cam 360, a depression 41 of the ledge 01' level 40 is provided wherein all of the needles n except the segment na may be depressed below their normal idle level on ledge 40. It will, however, be union derstood that the needles to be isolatedmight be projected from a series of needles n all held'at a lower level than normal, or that in some cases the needles 'n might be abnormally elevated and all of them except the needles to receive the additional vyarn then be depressed; or that the needles to receive the additional yarn might be elevated from the normal level at which the other needles are permitted to remain. In any case, all of the needlesat the leve'l 40, pre'. ceding the illustrated depression 41, have upon their open latches loops of the yarn k in-terknit with a vprevious course cast off at cam 360. Any of these needles may thus be depressed at 41 without casting off ltheir last loop.

Any convenient means for depressing all the needles n, except the needles n? maybe as on a resilient spring arm 101 having a depending lug 102, Figs. 1 and 7, adapted to' be 'bent to adjustwith respect to cam-ring new part of g fully disclosed in my application Serial No.

yarn 7:.- In case intermittent operation of the nee- 271 the inward position of the cam 100 under stress of spring arm 101. Spring arm 101 is. made fast to ring 271 at arelatively remote point, as at the screws 103, Fign 4. Cam 100 is beveled at-its forward end 105 to form a depressng slope for such needles as encounter it, but its inner Vertical face is beveled outwardly at its rear end at 106, Fig. 4, so that arm 101 and cam 100 can yield outwardly upon reversedl relative motion of the` parts when the beveled face 106 is struck by a needle of any length of butt traveling at the level 40. By this means cam 100 is rendered active to depress such needl'es as encounter it in the' direction of ar-` 'row N only.

The normal position of cam 100, as shown in Figs. 4 and 7, is such as to cause its depressing. slope 105 to encounter and depress all of the needles except the needles ns having the shortest butts. These needles na pass across the face of cam 100 at the normal level 40, and thereby stand above the other needles throughout the extent of the depression 41.

lvhenv intermittent operation of the needle-isolating devices 41, 100 with respect to the needles na is desired (the lug 102 being adjusted as shown to permit cam 100 to move inwardito affect all of the needlebutts), positive means for moving cam 100 outwardly at intervals thento permit needles 11.3 to pass across its face are provided, said means, for instance, moving the cam 100 outwardly to its normal position during three or four successive Courses, and permitting the cam 100 to move inwardly to depress all of the needles during one or more following Courses. One convenient device "for this purpose is that illustrated in Fig. 4, a lever '420 pivoted at a remote point (not shown) above and to the right of the figure being operated to move on the arc f against .a pin 107 projecting from cam 100, so that in the normal position illustrated cam 100 is withdrawn outwardly to pass the needles n Without depressing'them. Lever 420 ma)7 occupy 'this position normally, bei-ng withdrawn at intervals of the desired number of Courses in the direction of the arrow f', or left stationary for as long as desired. Means for so Operating such a lever 420 forms no. my present invention, lbeing 853.053. filed .Julv 25', 1914V (Patent No. 1.311.623 dated July 29. 19.19).: 'WVhen lever 420 is witlidrawn, spring-arm101 moves cam 100 as far inward as permitted by lufz 102. In this position. all of the needles are depressed bv-cain 100. but this. isgwithout result on the. fabric formedof the bodydle-isolatingdevices at interv'als of 'a few courses only vis not desired, the lug 102 may.

be so bent as to limit cam 100` from further inward movement than sufficicnt to depress all of the needles except the needles na, and tholever 420.1'1eed not be employed; or the lever 420 may be left iu the )osition shown. In either case the cam 100 is free to yield outwardly against stress of spring-armlOl..

The additxonal yarn t is supplied by a movable yarn-guide t' during formation of the desired predetermined part of the article only, an automatic Operating connection, preferably to the pattern surface or drum 120, controlling the operative and inoperative positions of said movable guide t'.

`Referring now to Figs. 1, 2 and 3, vguide t' may be a thin resilient strip of metal having suitable yarn eyes therein fastened to' guide k* for the heel and toe yarn, or another .yarn-guide or movable part whose connection 460 is normally elevated at the times intended foroperative position of'the guide t'. Lever T and guide t' may now be depressed by Vgiving to bar 460 an extra elevating movement above the range of movement suitable for moving out of operation the part usually operated by it, such as yarnguide c As shown. cams 501 of one height on drum 520 move the yarn-guide lc* out of operative position, and a more elevated part 502 on the` same ring of cams serves to move lever T and guide t' into operative position at another predetermined part of the knitting. The connection t* is readil'y removable from the machine.

Lever T is so formed as to bring the yarnguide t' forming a part thereof substantially into the relative position with respect to the needle circle, the. cam 100 and depression 41, and the rema-ining` yarn-guides illustrated in Figs. 1, 3, and 9 to 14; As best shown in Figs. 1 and 3, the guide t' is arrangedto deliver yarn t beneat'h the line swept by hooks of the needles moving at normal level 40. To permit access of the guide t'- to this positvion;. a depression or gap d is formed in the 'cylindrical inner surface of -the usual latch- L'ua-rd ring 550. A movable gap-closer llO ringF 565A substantially as illustratedin my f the needles are elevated for reciprocalknitti.ng.

I Referring now to Fig. 1. whenever the cam 100 is in its normal position the needles n3 are isolated but remain at their normal level, so that these needles receive the a-rn t .When they pass the yarn-guide t', t e remaining needles having passed down the slope 105 and being' depressed in the depression 41. None of the needles except the needles na encounter the yarn t. The, effect of this is illustrated in Figs. 9 to 14. In Fig. 9 for instance a. group of needles na is shown at I approaching the yarn-guide t'. These needles having taken the yarn t in their hooks, will pass to position II, the yarn t extending in an increasing chord of the circle. the yarn t being drawn out in the direction of the arrow g until the yarn t extends across a diameter of the circle of the needles n, as shown in Fig. 11. During the remainder of the relative motion of the group of needles n3 with respect to the yarnguide t' the yarn t is recovered through the yarn-guide t' in the direction of the arrow g'..

To permit the yarn t to be drawn off and recovered in this manner, it may be fed through an ordinary spring take-up device, not shown, of any suitable sort. I

The needles n3 take the yarn lc and knit at the cam 360 in .a normal manner. It will be observed thatI the yarn t has been taken upon these needles in their hooks, or upon their opened latches, but prior to receiving the yarn k for a new knitting course the needles n3 were advanced, 'along with the other needles at the upper surface of the cam 361, and thereby cleared the yarn t beneath their open latches so that the yarn t is in the position of the knit loops of the. last course. This insures that the yarn t shall be cast ofl of the needles n3 'without being interknit by them. Referring to Fig. 16, the only engagementof the yarn t thus received by the needles na, which knit the Wales b, a', b in said figure. is with the yarn of the sinker- Wales between the Wales b and normal Wales of the body fabric.

Continued revolution of the needles na with respect to the yarn-guide t' produces a continuous wrapping of the yarn t about the needles na in a direction contrary to the direction of rotation of the needles n, as illustrated by the arrow fw in Fig. 1 1. At the knitting point 360 .in each revolution this Wrapping is cast ofl' over the head of the needles, being replaced by another turn prior to the passage of the needles n3 on the next revolution at the cam 360.

That portion of the yarn t drawn oif and recovered during each revolution appvears in the fabric as a float g/ extending from the engagement of the yarn t in one sinker-Wale,

to the engagement of the yarn t in another lsinker-wale beyond the Wales b. a' b 'from the needles'n3 in the next course.

That` part of the yarn t which was'placed upon the face or hook side of the needles 'n' `face of the fabric.

vdesired small number, for instance, one, two

at their passa e by the guide t' and subsequently cast o from these needles, extends t thback of the fabric asishoWn at y' in If now all of the needles, including the needles n3, are depressed into the depression 41 at passage by the yarn-guide t' the yarn t will not bereceived by any of the needles and will float across the intervening course or courses of thel yarn lc as illustrated at yt, Fig. 16.

If the yarn t is fed under suitable tension, as by the employment of any-known tension device, the wales b, a', b of the body fabric Will bev puckered or projected above the sur- Bo 'While I'have shown for one instance a group of three needles na, it should be understood that the said needles may be employed in any or ten. In -each case the effect of 'the relative rotation of the needle circle will be to wind the yarn t about the needle or needles rical fioats of the yarn 8 illustrated in Figs.

13 and 14, as usual. For thisp'purpose during the knitting of the parts of the article not spliced, the yarn 8 may as usual be clamped as at 7 Fig. 9, above an internal plate or dial 5, the yarn-guide 8' being above or within the circle of needles. iUnder these I cii'cumstances the float t. Fig. 9, is free to pass under the plate 5 without encountering the yarn 8.

I have shown by way of example of the application of mydevice to the machine of U0 my said application Serial No. 66.424,`in F igs. 5 and 6, an internal plate 5 covering an instrument-dial 4 provided With a sloped boss 3'and a cutaway portion 20 adapted to guide the floated yarn t beneath the respective structures 3, 4 and 5. The instrument-t dial 4 in this case rotates in unison with the needles in the direction of' the arrow on Fig. 5. The cutaway portion 20 extends behind the position of the needles n3 so that the float of the yarn t may readily enter under the dial 4. o f

If now the guide 8'- is moved from its position illustrated in'Fi'g. 9 "to the positionv illustrated'in Fig. 10 to begin feeding its 125.

yarn to the leading needle-11.2, it Willbe observed that the yarn t'will not encounter the splicing yarn 8, the `needles na and the varn t moving in the successive .positions infFigs. 10, 11 and 12. vThe yyarn t on the needles n3 U0 mil guide 8' again moves to the inoperative position, but at this time, before the float of the yarn 8 can reach it the needles 12,3 will have passed theyarn-guide zt'. When the yarn 8 made its exit from the fabric it did.

so With respect to a cast-off course lying at the back of the needles and in a relativel low position. The float of the yarn 8 wil therefore enter under the yarn t, as shown in Fig. 13, and the yarn t Will rcmain above the fioated yarn 8 as illustrated in Fig. 14, during the remaining half revolution. The yarns will continue to pass in succession as illustrated in Figs. 12, 13 and 14 respectively so long as the splicing yarn is fed.

It is not necessary that 'all of the needles n should be'adjacent to ,each other. The

' needle for knittingvthe wale a', F ig. 16, may,

for instance, be one of the needles n2. ln that case the passage of this particular needle nz to the level 40 after traversing the depression 41 will bring the needle 77,2 in front of the wrapping of the yarn t received by the needles na. In this case the yarn tpasses to the back of the fabric in each of the Wales Z) from the needles na, but is engaged only With the sinkerwales respectively between Wales a and b and b and a'.

F ormation in the fabric of the thickened mark 2 begins and ends upon movement of yarn-guide t' into and out of operation, as predetermined by the position and extent of cam 502, Fig. 2. When thrust-bar. 460 leaves the end of said cam, the yarn t is withdrawn upwardly, Whereupon rotation of its point of attachment to the fabric causes this yarn to pass about the devices above the plate 5, as shown in Fig. 3, until the end of the yarn t is received under the clamp 7 and severed by the cutter 16 of the usual kind As shown in F ig. 15, themark 2 may imitate a sewed seam at the back of a seamless tubular stocking, and in that case may be begun at any point at or beneath the top or hem .and endabove the heel.

It should be observed that the arrangement of devices by which the yarn t'is engaged With the fabric without entering the kmt loops enables' the 'fabric to be made Without providing means for increasin the lengthof the stitches in the Wales kmt, b the needles employed for forming the mar or thickened wale. Otherwise, it would be impracticable to knit ,upon the same needles the yarns k, 8, and t Without breakage. 'The machine may include the usual devices for increasing the length of'the body-yarn loops 'not be vma e.

in the area h, but special provisionfor' lengthenin the stitehes of needles n' need By, the described means, the yarn t is engaged with the fabric so as to lie wholly on one face of vthe fabric, said yarn t being concealed by the loops of\the yarn' k, or the yarns hand 8. i The yarn t may dilfer in kind or quality from either or any of the other yarns. 4

lVVhat I claim is: a

1. A knitting machine havin 'therein a series of needles, means for fee in a body yarn and a splicing yarn to and'kmtting at said needles, means for isolatingone or more of said needles, and means operative wholly at one side of the series of needles by relative movement .between said means and series for placing a wrapping of a continuous additional yarn on said isolated needle or all of said isolated needles prior to knitting on said needles or any of them.

2. A knitting machine having a series of needles, stitch cams, and a means for feeding a body yarn to and knitting at said needles, means for causing a narrow segment of the needles to stand at a higher level than other needles at a place remote from the stltch cams, and means operative wholly at one side of the series of needles by relative movement between said means and series to.

ou's additional yarn on said isolated needle or 'needles in a position to be cast ofi' unknit When the next subsequent course of body yarn is knit thereat.

4. A knitting machine having therein longitudinally movable needles, means for feeding a body and a splicing yarn to and knitting said yarns at said needles, means for causing one or more of said needles to be isolated by movement of some of the needles to a different position from the others, and means Operating wholly at onev side of the series of needles by relative movement be- ,tween said means and the'needles for lacing a wrapping of a continuous additional yarn on said isolated needle or needles in a position to be cast off unknit when the next subsequent course of body and splicing yarn is knit thereat. v 'a 5. A knitting machine having a series of needles and automatic means for `knitting thereon from a body yarn and a splicing yarn a predetermined extent of -fabric, in combination With a guide for an additional yarnA Operating wholly at one .side of the llU series of needles by relative movement between said means and series for placing on some of the needles at predetermmed times in the' operation prior to knitting on them a wrapping of an additional yarn.

6. A knitting machine having in combination needles and means for knitting thereupon of a body yarn a' body fabric, and means operative durin knitting for engaging with the body fabrlc and alternately on each side of one or moreneedle-Wales Without interkni'tting an additional yarn, said yarn being free from engagement with the wrapping of an additional yarn.'

8. `A knitting machine having needles, yarn feed means and cam devices adapted to act on all of the needles to knit a body fabric, in combination with means for feeding an additional yarn, and a cam device for moving all of said needles except certain isolated needles out of range of said additional yarn, whereby to form on said isolated needles a wrappingi of said additional yarn adapted to be cast of with the last knit course.

[9. A knittin machine having a series of needles, a stitc cam,V and a yarn-feed guide for knitting body fabric, a guide for an additional. yarn adapted to be held stationary when in operation, and a needle isolating device cooperating with said additional yarn-guide for wrapping about a narrow group of the needles only an additional yarn, and subsequently Operating means adapted to engage said additional yarn with the body-yarn of a subsequent course only.

10. A knitting machine having latch needles, a -stitch cam, .and a yarn-feed guide for knitting 'body fabric, an additional yarnguide, and a needle isolating device coopcrating with said additional yarn-guide for arranging upon some-of the needles onlyT above their latches an additional lyarn, and

means acting on the needlesv to clear the needle-latches from said additional yarn acting prior to the formation of the next knit course on said isolated needles.

p 11. A ,circular knitting machine having therein a series lof knitting needles knittin'g cams and a cooperating knitting yarn-guide, means for isolating one or more of the needles at a' point remote 'from the knitting cams, and a yarn-guide operative in fixed relation to said isolating means adapted to deliver additional yarn to said isolated needles only above their latches, inl combination with means for causing relative rotation between said needles and the respective yarnv guides and means for clearing the latches of said additional yarn prior to moving them to knit at the knitting cams.

12. A circular knittin machine havin yarn-feed means, a circu ar series of latcneedles, a stitch cam, and'means for maintaining the needles between passages of the stitch cam at' an idle level in which the loops are not cleared beneath the latches, in combination with an auxiliary cam adapted to depress from said idle level all of the needles except certain isolated needles, and means for feedinv an additional yarn to engage said isolated needles, whereby said additional yarn floats across the circle of needles between passages of said needles and their feeding means.

13. A knitting machine having a series of needles, a body yarn-guide and a stitch-cam adapted and arranged for single-courseknitting, in combination with means acting on the needles between successive passages of. the stitch-cam to isolate one or more needles from the other needles, and a feed guide operative at a point fi'xed in relation to said isolating means Whereby to feed an additional yarn `to said isolated needle or needles only in such relation as to be cast off of said needle or needles at the next passage of the stitch cam.

14. A knitting machine having a series of needles, a body yarn guide, a splicing yarn guide, a stitch cam, and means acting` on the needles to knit the body yarn and the splicing yarn at the stitch cam, in combination with means acting on the needles between successive passages of the stitch-cam to isolate one or lmore needles from theother needles, a feed guide adapted to feed an additional yarn to said isolated needle or needles only in such relation as to be cast ofi' at the next passage of the stitch cam, and means for rendering said yarn guide for the additional yarn operative and inoperative at a point fixed in relation to said isolating means at predetermined times.

15. In-a 'knitting machine, means for knitting a body yarn and means for knittin' a sectional reinforced or spliced area o a body-yarn and a splicing-yarn, in combination with means for engaging an additional yarn at or near the center of said reinforced area.

16. A knittin machine having needles and devices for eeding and knitting a bodyyarn, means for feeding to a segment of the needles only and interknitting a .splicing yarn, and means for engaging without interknitting an additional yarn with the fabric to produce a longitudinally-extending thickened mark.

17. .A knitting machine having needles and devices for feeding and knitting a bodyyarn, means for feedlng and interkmtting a splicing yarn at a segment' only of said needles, and means for engaging vvithout interknitting an additional yarn with the spliced p'ortions of the fabricto produce a longitudinally-extending thickened mark inI the spliced portions of the 'fabric. O

18. A stocking knitting machine having needles and'devicesfor feeding and knitting a body-yarn, means for feeding and interknittingl a splicingvyarn at a segment of the needles onlv during'knitting of certain parts of the stocking, and means for engaging an additionalyarn With the fabric to produce a longitudinally-extending thickened mark in the spliced and unspliced portions of the stocking.

19. A knitting machine having in combination needles, a stitch-cam, and means for feeding body and splicing yarns, in relation to the stitch-cam for knitting thereat, in combination with means for feeding, an additional yarn to certain of-said needles only at a point remote from 'said stitch-cam during splicing whereby said additional yarn is engaged with the spliced fabric without being interknit therein.

20. A knitting machine having a circle of needles and devices adapted to feed and withdraw a splicing yarn, whereby said splicing yarn fioats substantially diametrically across the needle-circle, in combination with means for simultaneously feeding to a segment of the needles and floating lacross the circle an additional yarn, and

means for knitting fabric engaging said additional yarn. o

21. A knitting machine having means for knitting body fabric, means adapted to engage at the back of the fabric Without interlknitting with' said fabric an additional yarn in successive courses, and means adapted to prevent such engagement at intervals whereby to produce a thickened interrupted mark imitating a looper-sewed seam.

22. A knitting machine having means for knitting body fabric. means adapted to engage at the back of the fabric Without interknitting with said fabric an additional yarn in successive courses during knitting of a predetermined extent of the fabrie, and means adapted to prevent suchengagement at intervals of one or more courses during the knitting of said predetermined extent of fabric.

23; A knitting machine .having needles, a stitch cam and a cam adapted to selectivelv' act upon the butts of said needles to isolate certain needles, means'for feeding an additional ,yarn to the isolated needles in position to be cast off unknit at the stitch cam, and automatic means causing said cam at times to act upon all of the needles, whereby to Pl'e'vent taking of said additional arn at said times.

24. A' knitting machine having needles] and a movable cam' adapted in one position to selectively act upon the butts of certain needles to isolate other.ne edle--means for feedingto the isolated needles, and for casting off therefrom unknit an additional yarn, and automatic meansfor moving' saidtam into another position to act upon all 'ofxthe needles, Whereby to preventtaking o. id additional yarn at times.

25. A knitting machine. having in combination needles with operatin butts of different lengths, body yarnv eeding means and a stitch-cam means for feeding a splicing yarn to be interknit at said stitch-cam, means for normally retaining the needles between passages of the stitch-cam at 'an intermediate level, means for isolating needles having one len h of butt comprising a movable depressmg cam adapted to depress all of the needles cxcept those having that length of butt, the said cam being adapted to pass all of the other needles at said level and means for laying upon the isolated needles an additional yarn.

26. A knitting machine having needles with Operating butts of different lengths. a stitch-cam means for feeding a splicing yarn to be interknit at said stitch-cam and means for normally retaining the needles between passages of the stitch-cam at an intermedi-` ate level, in combination With a depressng cam for isolating needles having one length of butt adapted to engage and move out of said level all of the needles except those having that length of butt, the isolated the normal level and means for laying an additional yarn on the isolated needles.

27. A stocking knitting machine adapted for rotary and reciprocatory knitting and having needles With Operating butts of different lengths, stitch-cams, and means for 'normally retaining the needles between pascircle of needles a seamless stocking having' heel and toe pockets formed on a segmentof said needles, and having means for knitting a high-spliced area above the heel, inv

combination with means cooperating with needles of said segment to enga e an additional yarn in the fabric, where y to form -needles being adapted to pass said cam at CSI a thickened mock-seam at'the back` of the leg, said seam extending into the spliced area.

29. A camo device for lknitting machines comprisin av resilient arm rigidly mounted at one en a needle cam mounted on said arm, and a lug on said arm adapted to be bent' to determine by contact with a fixed part one position of said cam.

` other needles, and an auxiliary 30. A movable auxiliary cam device for circular kmttmg machines comprlsmg a cam carrier, a resilient arm thereon, a beveled .needle cam mounted thereon whereby said cam can yield when approached by needles in one direction, said cam being normally held by said arm in one position, and positively acting means acting in a direction angular to a radius of the machine and adap'ted to engage a projection from said arm and cam for changing the position of guide adapted to feed to and with 'raw from said iolated needles an additional yarn, said additional yarn when withdrawn being positioned to be received and severed by said severing means.

32. A knitting machine having' therein needles, a stitch cam, means for knitting body-fabric thereon, and means for feeding to certain of the needles an additional yarn forengagement with lthe body-fabric to form a longitudinal thickened wale or mark, said w means comprising a movable yarn guide, a

pattern-surface, and a connection from said surface for moving said yarn-guide into and out of a fixed position in range 'of and at one side of the needles at a point remote from thestitch cam at predetermined times. 33. In a' knitting machine yarn-feeding devices comprising a -movable yarn-feed guide for a body yarn, a thrust-bar for moving said body-yarn guide, a pattern surface, and cam means thereon for normall moving said thrust-bar to move said bo y-yarn guide into 'and out of operative position, in combination with a movable yarn guide for an additional yarn, a connection between said additional yarn guidel and said thrust-bar, and means for moving said thrust-bar to a different extent from its normal movement yto work said additional guide.

34. In a circular knitting machinehaving needles and an instrument-dial relatively fixed with respect to the needles in a rotary Sense, and having yarn-feed means with res ect to which and-said needles and dial t ere is relative rotary movement, means for pcrmitting a yarn floated across the needlecircle from isolated needles to ass under said dial comprising a cut-away ace on the under side of said dial following in the direction of relative rotation the position of said isolated needles.

35. In a circular knitting machine having needles and an instrument-dial mounted within the needles, and means adapted to cause a yarn or yarns to be removed Within the circle of needles, means for permitting such yarn or yarns to float freely under said instrument-dial comprising a conical pro-' jection or boss at the under side of said dial. Signed by me at Boston, Massachusetts, this Seventh day of August, 1916.

ROBERT W. SCOTT. 

